A chopper like Airwolf could be created today
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roger-skagerstrom — 18 years ago(June 19, 2007 04:39 PM)
But If the rotor and the helicopter is rotating/traveling in the same speed.. Let's say you fly in 500 mph, and the tip of the rotor spins at 500mph And lets say the rotor is spinning clockwise. From 12 aclock to 6 aclock the rotorblades edge will, relativly to the ground - stay still. While the blade in the 6 aclock to 12 radius will travel in 1000mph. Giving you enourmous amounts of lift on one side and non on one side. Kaboom. I'm not knowlageable in aircraft tech but musn't the blades in any given position on a helicopter spin faster the actual machine is going thru the air?
This is solved by using counter rotating main rotors like the Kamov, but that is a very "tall" configuration and I wonder if there is any material available to make axels, rotorheads etc. that can take the pressure. Imagine the drag!! -
mistertwistr — 18 years ago(June 21, 2007 09:21 AM)
On the subject of The Russian made Kamov Ka-50( A.K.A. BLACK SHARK) Which has some interesting features such as: (Taken from Wikipedia on the KA-50)
It is the "World's First and Only" single seat attack helicopter, the first "coaxial rotor" attack helicopter, and the first attack helicopter with "zero-zero ejection seat"
So in response to your question involving the pressure of the rotors. A "Co-axial rotor system", removes the need for the entire tail-rotor assembly and improves the aircraft's aerobatic qualities it can perform loops, rolls, and the funnel where the aircraft maintains a line-of-sight to target while flying circles of varying altitude, elevation, and airspeed around it. Using two rotors means that a smaller rotor with slower moving rotor tips can be used compared to a single rotor design. Since the speed of the advancing rotor tip is a primary limitation to the maximum speed of a helicopter, this allows a faster maximum speed than helicopters such as the AH-64. The elimination of the tail rotor is a qualitative advantage because the torque-countering tail rotor can waste up to 30% of engine power. (To begin with, Black Shark's Klimovs offer more shaft horsepower, some 2200 shp apiece, than e.g. Apache's General Electric turboshafts, at 1890 shp, which contributes to the superb performance.) Furthermore, the vulnerable boom and rear gearbox are fairly common causes of helicopter losses in combat (as proven in Vietnam); the Black Shark's entire transmission presents a comparatively small target to ground fire. Kamov maintains that the co-axial drive assembly is built to survive hits from 23mm ammunition like the other vital parts of the helicopter. The zero native torque also allows the aircraft to be fairly immune to wind strength and direction, and to have an unsurpassed turn rate in all travel speed envelopes.
The Co-Axial Rotor system of the RA-50 makes supersonic flight even more theorheticaly possible by establishing an equilibrium, as well as providing an answer to a helicopter with an ejection seat.
As far as material that can take that or any other kind of pressure, yes their is:
It's a newly created alloy called "BUCKEY TUBE" ( feel free to look it up) It's basically a carbon based material reinforced atom by atom to create a material stronger, lighter and more flexable/bendable then steel. Their's the material needed to create the axels, rotorheads,blades and overall body of the helicopter, to create a supersonic heavily armored chopper like Airwolf. Of course Bucky tube and carbon nanotube technology in general is new and at this point in time very expensive, but in the forseeable future it most likely will be more commonly used, not to mention cheaper.
Another thing about Airwolf I feel compelled to mention is it's apparent "stealth capabilities. Which in the show, Airwolf having "Stealth Capabilities" or a "Stealth mode" well, that's probably the one "Sci-Fi idea" of Airwolf that they did state as correct.
Many people think that "stealth" makes an aircraft invisible to radar, the truth is their is no such thing as an aircraft that's completly invisible to radar. Their are numerous tricks to avoid being detected. Such as:
Corner reflector, Planform alignment and numerous other "tricks" like flying below the inital wavelength and more drastic measures such as radar jamming and ECMS.
Like I mentioned before A chopper like Airwolf could be created today it's just the billions upon billions of dollars price tag keeping it from being a reality. -
TheHambers — 18 years ago(July 03, 2007 10:50 AM)
"Size wise it'd most likely be about as a big as a typical jet due to space needed to carry roughly 20,000 pounds of fuel (that's roughly the same amount of fuel needed for the U.S. made F-14 Tomcat). As well as space for all the rounds of ammunition and missles."
You know, you might as well build a jet if the helo is going to be like that.
And have you considered retreating blade stall? always been a big problem apparently. -
davedavidl — 13 years ago(September 08, 2012 05:18 AM)
You also forget that Airwolf travels at super speeds because of jet thrusters, a version of KITT's Turboboost.
It has long been understood and known that with sufficient forward thrust, wings/ailerons/elevators are not necessary.
To me, that makes sense that Airwolf would "disengage the rotors" when hitting the turbos, because to stay in the air they only need that forward thrust to overcome the resistance of gravity.
I believe it IS possible to develop a super-fast attack helicopter. -
Aberdeenfortheolympics — 18 years ago(July 07, 2007 05:10 PM)
Do you understand rotor dynamics, rotor blades at their tips can be moving at supersonic speeds but that is purely a by product of keeping enough rotations to enable lift. To move at supersonic speeds you would need to attach a jet engine to the chopper to enable that kind of speed as a rotor head simply cannot create enough forward speed to do this. Problem is once you strap a jet engine to a chopper you need to make the rotor passive so it isn't creating drag and then it isn't causing lift which is it's primary purpose as the rotor is the wing on a helicopter, so you disable the rotor from moving or allow it to autorotate but you still need a surface to create lift or your jet will fire a big object into the ground, so you stick wings on hey presto you don't need your rotor head because you have a plane.
http://www.jefflewis.net/rotorcraft_limitations.html
Thats a good article read it and it explains why airwolf won't work and doesn't exist and isn't being developed.
Frieden durch berlegene Feuerkraft -
darkavenger77 — 9 years ago(June 10, 2016 04:34 PM)
Also in a lot of episodes I have seen airwolf fire an amazing amount of ammunition. How can a helicopter hold all that?
I've added a goof to the main page for the show in that regard. They talk of firing several different missiles such as Mavericks, Hellfires, and Harpoons. All of these cannot be fired through a small tube that was shown being used to fire them. Harpoons for example are over a foot in diameter.
That's as plausible as small "turbo" afterburners making a 150 MPH helicopter supersonic, or one with a 370 mile range being able to fly thousands of miles w/o refueling.
Ignoring politics doesn't mean politics will ignore you.
-Pericles paraphrased in <100 characters -
lvcambot-2 — 16 years ago(September 07, 2009 11:13 PM)
If you read "The Ultimate Time Machine" by Psychic Spy 001 Joe McMoneagle. He predicts that they WILL create an "AirWolf" style helicopter. The rotors will be able to stop mid flight.
FYI and all that.
GENE
Joss Wheadon! Sleeping in the parking lot for a year doesn't count as an Oscar win for "Toy Story! -
nk44ab — 16 years ago(September 17, 2009 09:05 AM)
It's not simply the supersonic flight idea that made Airwolf unique. It was loaded with high-tech surveillence gear and firepower. The entire body was armor plated and the air intakes had armored mesh shields which I assume meant it could withstand various storms. It's interesting to think that in the pilot episode the FIRM originally wanted to the Department of Defense to have Airwolf and take credit for it.
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RParmly-3 — 15 years ago(November 07, 2010 05:13 PM)
I don't remember much about how this works, but long long ago in a science magazine, I saw a model of what could theoretically be a "supersonic helicopter" type of aircraft. Looks basically like an airplane; the wings are one, long, straight single piece on top of the fuselage, and they act as a rotor for take-off and landing, then lock into place and turn the thing into a regular aircraft when it's in the air.
I don't know if this has ever been seriously studied, but it looked like an interesting concept.
I love it when a plan comes together. -
graham-167 — 15 years ago(January 27, 2011 04:14 AM)
According to the pilot episode, Airwolf is a lifting body; that is, above a certain speed the shape of the body is such that it generates enough lift to keep the copter up in the air. That's the point of firing those jet engines; the rotors are disengaged and allowed to spin freely, generating no lift, because at high speed the body does that.
A true lifting body wouldn't look anything like Airwolf (here is an example of one : http://area51specialprojects.com/images/m2-f1.jpg) but it's pretty cool that the writers actually seem to have done the research on why a helicopter couldn't do supersonic speeds, AND come up with a plausible explanation for why Airwolf could.
Unfortunately in the series they simplified all that to "turbine boost = fast" and left it at that. -
CGSailor — 15 years ago(March 17, 2011 04:14 PM)
You and several others on this thread have not a clue about Helicopters and aerodynamics nor the principles and limiting factors to high speed flight by helicopters.
You ALMOST touch upon one of the principles but your posts show your lack any real understanding.
The two main problems are ones of "asymmetric lift" and "retreating blade stall".
Just recently in the news there was new records set by helicopters in flight. the new design topped out over 125 MPH faster than most normal Helicopters.
over 125 MPH faster and it still only hit 290MPH.
NOWHERE
NEAR
SUPERSONIC
The problem is not simply one of making a stronger Helo or more accurately a strong rotor blade with you "bucky tubes" or whatnot. There is far more involved than your armchair couch potato aeronautical engineering can grasp.
Today's modern Helos are more advanced than even the fiction Airwolf in all ways but one. That being supersonic scratch that, not even high speed subsonic flight.
Maybe one day. But not anytime soon. Sure as hell not "could be created today"
If it could they would have done so, even if only as a flight demonstration model.
I joined the Navy to see the world, only to discover the world is 2/3 water! -
John_Dee_007 — 15 years ago(March 30, 2011 09:56 AM)
Is this thread serious? This is the stuff 7yr old boys dream up. There really is no logical, economically viable or military need for such a ridiculously absurd aircraft. I'd sooner see the logic in a genetically altered elephant with 2 trunks that could cook me breakfast and do kung fu. This naively ambitious idea reminds me of an esoteric film from the 30s called
Non-Stop New York
(1937), which featured a fictional transatlantic passenger airliner with an outdoor observational deck!
http://www.imdb.com/board/10029319/
I can only assume the majority of people who come to this board are guys in their 30s and 40s who actually remember this show as kids. Otherwise, aside from sentimental interests, what possible reason could one be interested in such an implausibly cheesy show? Which begs the question: why are - presumably - grown men discussing such nonsense? This topic is void of all rationale. Which brings me back to my original question: is this thread serious?
"
People should know when they're conquered
" - Quintus
